EP0008561B1 - Appareillage pour compacter les pâtes carbonées dans les garnissages de fours métallurgiques - Google Patents

Appareillage pour compacter les pâtes carbonées dans les garnissages de fours métallurgiques Download PDF

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Publication number
EP0008561B1
EP0008561B1 EP79420038A EP79420038A EP0008561B1 EP 0008561 B1 EP0008561 B1 EP 0008561B1 EP 79420038 A EP79420038 A EP 79420038A EP 79420038 A EP79420038 A EP 79420038A EP 0008561 B1 EP0008561 B1 EP 0008561B1
Authority
EP
European Patent Office
Prior art keywords
compacting
carbonaceous
vibrations
pastes according
carbonaceous pastes
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP79420038A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0008561A1 (fr
Inventor
Benoît SULMONT
Gérard Hudault
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rio Tinto France SAS
Original Assignee
Aluminium Pechiney SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Aluminium Pechiney SA filed Critical Aluminium Pechiney SA
Priority to AT79420038T priority Critical patent/ATE1632T1/de
Publication of EP0008561A1 publication Critical patent/EP0008561A1/fr
Application granted granted Critical
Publication of EP0008561B1 publication Critical patent/EP0008561B1/fr
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    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
    • C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
    • C25C3/08—Cell construction, e.g. bottoms, walls, cathodes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Definitions

  • the present invention relates to an apparatus for compacting carbonaceous pastes in the linings of metallurgical and electrometallurgical furnaces, and, in particular, for compacting the joints during the assembly of carbon or graphite blocks constituting the lining of cells for the production of aluminum by electrolysis of alumina dissolved in molten cryolite, of which they constitute the cathode.
  • carbonaceous pasta will denote pasta made up of an aggregate at least partly carbonaceous and of a binder, and “pot lining paste” a carbonated paste essentially made up of coke and pitch.
  • pot lining pastes whether to form seals or filling elements, are used at a relatively high temperature, of the order of 110 to 140 ° C.
  • the dough In order to ensure sufficient compactness and tightness in the joint or filling, the dough must be deposited in successive layers no more than 15 to 20 cm thick and tamped down each layer using a lady or mounted pestle on a pneumatic percussion device. This work is done manually and it is often tedious for the operating personnel, due to the vibrations, as well as the heat and the evolution of tar and smoke.
  • the lifetime of an electrolysis cell for the manufacture of aluminum, for example is closely linked to the care with which the joints between the cathode blocks have been made. The problem therefore arises of mechanizing the compacting operation of carbonaceous pastes, both for the comfort of the personnel, and for the regularity and quality of the seals or of the linings.
  • the present invention relates to an apparatus for compacting carbonaceous pastes shaped hot or cold, characterized in that it comprises a vibration generator of amplitude between 1 and 50 mm, a means for transmitting the vibrations and the boost to carbon paste. It also includes a static pressure generator, the effect of which combines with that of vibrations to ensure compaction.
  • the static thrust and the main component of the vibrations must be directed in the direction of compaction or in a neighboring direction. They are transmitted to the dough to be compacted by means of a tool, generally called a lady, whose shape and dimensions are adapted to the shape and the dimensions of filling to be produced.
  • the apparatus further comprises means for moving it and orienting it in all the positions of the space required by the compacting operations.
  • the apparatus may also include various ancillary devices such as an automatic supply of carbonaceous paste and a means for programming its automatic movement, for example along the various joints or linings to be executed in each type of metallurgical furnace.
  • various ancillary devices such as an automatic supply of carbonaceous paste and a means for programming its automatic movement, for example along the various joints or linings to be executed in each type of metallurgical furnace.
  • the compactor (1) consists of a metal box in which is placed a vibration generating device.
  • the eccentric unbalance motor has proved to be particularly practical, economical and robust. It can be operated, for example, by electricity or compressed air.
  • the eccentric unbalance motor is arranged so that its axis of rotation is in a substantially horizontal plane. If you want to achieve better balancing, you can use two eccentric unbalance motors whose directions of rotation are reversed and the rotations synchronized so that the two unbalances can pass simultaneously - or not - at the high point and at the low point.
  • the lateral vibratory component can thus be adjusted to a medium, low or zero value. The same result can be obtained from a single motor driving two synchronized unbalances, rotating in opposite directions as above.
  • vibration generators can be implemented without departing from the scope of the invention, for example, a magnetostrictive effect generator, or a pneumatic vibrator.
  • the compactor (1) is mounted at the end of a suspension arm (2) fixed to the end of a bracket (3) movable around a vertical axis (4). Static thrust is provided by the cylinder (5).
  • the inclination of the compactor is adjustable, for example, by double-acting rotary actuator, or any other known means.
  • the handle (14) allows the operator to guide the movements and facilitate the positioning of the device at the joint.
  • the compacting tool or "lady” which must be interchangeable to adapt to the shape and size of the joint or lining to be produced, transmits the vibrational energy and the static thrusts to the dough. It is removably attached under the compactor.
  • the lady (6), figure 2 is adapted to a long and narrow joint. It is perforated to reduce its weight so as to correctly transmit the vibrations. It is fixed by two stirrups (7, 7 ') arranged symmetrically on the sides of the compactor, and by clamping screws (8, 8') on the sole of the compactor.
  • the ladder (9), Figure 3 is suitable for grooming a "slope", that is to say the inclined part which connects the bottom of an electrolysis tank to the vertical side walls.
  • the device for suspending and moving the device can be of any known type.
  • the one shown in FIG. 1 is only one particular embodiment example suitable for an electrolysis cell. It comprises a carriage (10) movable on the horizontal beam (11) of a gantry (12) moving on rails (13, 13 ') arranged along the electrolytic cell or the series of cells, s 'there occurs.
  • the joints to be made were 2.36 m long, 40 mm wide and 450 mm deep.
  • the joint was made in four successive layers with a lady of 2.35 meters long.
  • the compaction rate ratio between the volume of the compacted pulp and the raw pulp is around 45% and can reach and even exceed 50%, which is very satisfactory.
  • the machine is particularly suitable for making the lining of metallurgical ovens made partially or completely from carbonaceous pastes. It may comprise, additionally, a paste distributor constituted by a possibly heated and / or heat-insulated reservoir and a worm or any other device making it possible to introduce the paste into the joint to be produced or onto the location to be coated.
  • control is then ensured from a programmable automaton, comprising in a memory the position and the dimension of the different seals and of the different tanks, which acts, at the same time, on the displacements of the compactor, the pulp feed and start and stop of compaction.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electrolytic Production Of Metals (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Furnace Details (AREA)
  • Preparation Of Fruits And Vegetables (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
  • Electrodes For Compound Or Non-Metal Manufacture (AREA)
EP79420038A 1978-08-16 1979-08-13 Appareillage pour compacter les pâtes carbonées dans les garnissages de fours métallurgiques Expired EP0008561B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT79420038T ATE1632T1 (de) 1978-08-16 1979-08-13 Anlage zum verdichten kohlenstoffhaltiger massen in der auskleidung metallurgischer oefen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7824423A FR2433725A1 (fr) 1978-08-16 1978-08-16 Appareillage pour compacter les pates carbonees dans les garnissages de fours metallurgiques
FR7824423 1978-08-16

Publications (2)

Publication Number Publication Date
EP0008561A1 EP0008561A1 (fr) 1980-03-05
EP0008561B1 true EP0008561B1 (fr) 1982-10-06

Family

ID=9212013

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79420038A Expired EP0008561B1 (fr) 1978-08-16 1979-08-13 Appareillage pour compacter les pâtes carbonées dans les garnissages de fours métallurgiques

Country Status (17)

Country Link
EP (1) EP0008561B1 (es)
JP (2) JPS5528496A (es)
AT (1) ATE1632T1 (es)
AU (1) AU530353B2 (es)
BR (1) BR7905230A (es)
CA (1) CA1124044A (es)
CH (1) CH630457A5 (es)
DE (1) DE2963810D1 (es)
ES (1) ES483359A1 (es)
FR (1) FR2433725A1 (es)
GB (1) GB2028477B (es)
GR (1) GR65194B (es)
IN (1) IN152480B (es)
MX (1) MX151585A (es)
OA (1) OA06323A (es)
PL (1) PL217748A1 (es)
YU (1) YU43117B (es)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3152796C2 (de) * 1981-03-31 1987-01-22 Institut problem lit'ja Akademii Nauk Ukrainskoj SSR, Kiev Verfahren zum Auskleiden eines h}ttenm{nnischen Aggregats
SE451001B (sv) * 1983-09-13 1987-08-24 Gunnar Broms Sett och anordning for beredning av gjutlador
WO1998020188A2 (en) * 1996-10-18 1998-05-14 Moltech Invent S.A. Apparatus and method for treating the cell lining of an aluminum electrowinning cell
FR2781618A1 (fr) * 1998-07-27 2000-01-28 Brochot Sa Dispositif electrique pour commander le mouvement de l'element compacteur dans une machine a brasquer
US20160177461A1 (en) * 2013-07-26 2016-06-23 Stas Inc. Aluminium electrolytic pot ramming machine
CN105624731B (zh) * 2016-03-14 2018-03-16 中冶天工集团有限公司 一种铝电解槽内衬糊料的组合式捣固施工方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2728109A (en) * 1952-06-06 1955-12-27 Savoie Electrodes Refract Method of making cathodic electrodes for electrolysis furnaces
CH356917A (de) * 1957-05-18 1961-09-15 Vmw Ranshofen Berndorf Ag Verfahren zur Herstellung eines Aluminiumelektrolyseofens
US3497017A (en) * 1968-02-23 1970-02-24 William H Goettl Impacting machine using dynamic reaction force
DE2233724C3 (de) * 1972-07-08 1975-11-27 Loewe Opta Gmbh, 1000 Berlin Schaltungsanordnung zum Einstellen der Frequenz in spannungsabhängigen Oszillatoren
JPS49131909A (es) * 1973-04-19 1974-12-18
JPS53108005A (en) * 1977-02-04 1978-09-20 Nippon Kokan Kk <Nkk> Auotmatic stamping device for trough for molten pig iron

Also Published As

Publication number Publication date
GB2028477B (en) 1982-09-15
FR2433725B1 (es) 1980-12-05
YU197579A (en) 1983-01-21
PL217748A1 (es) 1980-05-05
ES483359A1 (es) 1980-04-16
OA06323A (fr) 1981-06-30
MX151585A (es) 1984-12-21
AU530353B2 (en) 1983-07-14
EP0008561A1 (fr) 1980-03-05
AU4987179A (en) 1980-02-21
ATE1632T1 (de) 1982-10-15
DE2963810D1 (en) 1982-11-11
YU43117B (en) 1989-04-30
JPS6181599U (es) 1986-05-30
GR65194B (en) 1980-07-29
FR2433725A1 (fr) 1980-03-14
CH630457A5 (fr) 1982-06-15
CA1124044A (fr) 1982-05-25
GB2028477A (en) 1980-03-05
BR7905230A (pt) 1980-05-06
JPS5528496A (en) 1980-02-29
IN152480B (es) 1984-01-28

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